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- From: Philippe Piot <piot AT nicadd.niu.edu>
- To: "Frey Matthias (PSI)" <matthias.frey AT psi.ch>
- Cc: opal <opal AT lists.psi.ch>, "piot AT nicadd.niu.edu" <piot AT nicadd.niu.edu>
- Subject: Re: [Opal] example of parameter scan in opal
- Date: Tue, 21 Apr 2020 08:51:37 -0500
RAM 8
✔ 1 objectives
✔ 1 dvars
0 (PID: 9205) ▶ Pilot
7 (PID: 9212) ▶ Worker
1 (PID: 9206) ▶ Sampler
2 (PID: 9207) ▶ Worker
3 (PID: 9208) ▶ Worker
4 (PID: 9209) ▶ Worker
5 (PID: 9210) ▶ Worker
6 (PID: 9211) ▶ Worker
Warning: argument "one-pilot-converge" not found! Using default value (0).
Warning: argument "restartfile" not found! Using default value ().
Warning: argument "restartfile" not found! Using default value ().
Ippl> CommMPI: Parent process waiting for children ...
Ippl> CommMPI: Child 1 ready.
Ippl> CommMPI: Initialization complete.
Ippl> CommMPI: Started job 1 on host `paris.nicadd.niu.edu'.
Warning: argument "restartfile" not found! Using default value ().
Warning: argument "restartfile" not found! Using default value ().
Ippl> CommMPI: Parent process waiting for children ...
Ippl> CommMPI: Child 1 ready.
Ippl> CommMPI: Initialization complete.
Ippl> CommMPI: Started job 1 on host `paris.nicadd.niu.edu'.
Warning: argument "restartfile" not found! Using default value ().
Warning: argument "restartfile" not found! Using default value ().
Ippl> CommMPI: Started job 1 on host `paris.nicadd.niu.edu'.
Ippl> CommMPI: Parent process waiting for children ...
Ippl> CommMPI: Child 1 ready.
Ippl> CommMPI: Initialization complete.
Can't remove file in directory '/home/piot/JLab_NP_magnetized/straight_merger/opal/phiscan/0', (boost::filesystem::remove: Directory not empty: "/home/piot/JLab_NP_magnetized/straight_merger/opal/phiscan/0/data")
Ippl{0}> CommMPI: Parent process waiting for children ...
Ippl{0}> CommMPI: Child 1 ready.
https://www.niu.edu/advanced-accelerator-randd/
Northern Illinois University, Dept of Physics and
Northern Illinois Center for Accelerator & Detector Development
DeKalb, IL 60115, USA
Tel: 815 753 6473, Web: http://www.physics.niu.edu/physics/
Argonne National Laboratory, Advanced Photon Source
Accelerator System Division
Dear Philippe,
there's an example of the sampler in the manual
http://amas.web.psi.ch/opal/Documentation/master/OPAL_Manual.html#_example_input_file_2
In order to do scans, it's best you set RASTER=TRUE in the SAMPLE command, especially if you want to do multi-dimensional scans. Fuhrtermore, make sure you do not have any RANDOM=TRUE in the
individual SAMPLING commands. The sampler has the possibility to evaluate objectives like the optimizer.
http://amas.web.psi.ch/opal/Documentation/master/OPAL_Manual.html#sec.optimiser.opt-pilot-commands
The sampler then writes the objective output to the JSON file.
I've never used this option, hence, I do not have an example at hand. But maybe somebody else has one.
When you defined the objectives (i.e. obj1, obj2, ...), you have to put them into a list OBJECTIVES = {obj1, obj2, ...} in the SAMPLE command.
I hope this helps.
Best,
Matthias
Von: opal-request AT lists.psi.ch <opal-request AT lists.psi.ch> im Auftrag von Philippe Piot <piot AT nicadd.niu.edu>
Gesendet: Dienstag, 21. April 2020 13:32:57
An: opal
Betreff: [Opal] example of parameter scan in opalDear All,
Does somebody could share an example of an opal input file demonstrating how to scan a parameter (e.g. a solenoid B field) and record some of the beam parameters at the end of the beamline. Right now I am doing this externally (with my own scripts) but I am wondering if this is possible with the sampler feature. Thank you, -- Philippe.
Philippe Piot,
https://www.niu.edu/advanced-accelerator-randd/
Northern Illinois University, Dept of Physics and
Northern Illinois Center for Accelerator & Detector Development
DeKalb, IL 60115, USA
Tel: 815 753 6473, Web: http://www.physics.niu.edu/physics/
Argonne National Laboratory, Advanced Photon Source
Accelerator System DivisionLemont, IL 60439, USATel: 630 252 2415, Web: https://www.aps.anl.gov/Accelerator-Systems-Division
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- [Opal] example of parameter scan in opal, Philippe Piot, 04/21/2020
- AW: [Opal] example of parameter scan in opal, Frey Matthias (PSI), 04/21/2020
- Re: [Opal] example of parameter scan in opal, Philippe Piot, 04/21/2020
- AW: [Opal] example of parameter scan in opal, Frey Matthias (PSI), 04/21/2020
- Re: [Opal] example of parameter scan in opal, Philippe Piot, 04/21/2020
- AW: [Opal] example of parameter scan in opal, Frey Matthias (PSI), 04/21/2020
- AW: [Opal] example of parameter scan in opal, Frey Matthias (PSI), 04/21/2020
- Re: [Opal] example of parameter scan in opal, Philippe Piot, 04/21/2020
- AW: [Opal] example of parameter scan in opal, Frey Matthias (PSI), 04/21/2020
- Re: [Opal] example of parameter scan in opal, Philippe Piot, 04/21/2020
- [Opal] error when opening json samples file with pyOPALTools, Philippe Piot, 04/22/2020
- AW: [Opal] error when opening json samples file with pyOPALTools, Frey Matthias (PSI), 04/22/2020
- AW: [Opal] error when opening json samples file with pyOPALTools, Frey Matthias (PSI), 04/22/2020
- AW: [Opal] error when opening json samples file with pyOPALTools, Frey Matthias (PSI), 04/22/2020
- AW: [Opal] example of parameter scan in opal, Frey Matthias (PSI), 04/21/2020
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